毛缕草。11月(鞭毛纲)

IF 4.1 3区地球科学 Q1 PALEONTOLOGY Journal of Micropalaeontology Pub Date : 2018-01-05 DOI:10.5194/JM-37-17-2018

Martin A. Pearce, Graham L. Williams

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引用次数: 3

摘要

摘要少球形球藻是一种无扣带突、具有以根尖板为中心的活动突的gonyaulacacean恐龙囊肿，表明其具有性染色体表。然而，可参考Davy和Williams，1966年的描述的标本，虽然缺乏扣带突，但显然不是性感的。作为一种额外的并发症，前旋少球藻的正模具有扣带突。在这篇简短的文章中，我们描述了新属Fetchamium，以适应新转移的Fetchamiumprolixispinosumgen.et comb。nov.，并提供了该物种的诊断和校正。

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Fetchamium prolixispinosum gen. et comb. nov. (division Dinoflagellata)

Abstract. Oligosphaeridium is a gonyaulacacean dinocyst lacking cingular processes and possessing a distinctive process centred on the antapical plate indicating a sexiform hyposomal tabulation. However, specimens referable to the description of Oligosphaeridium prolixispinosum Davey and Williams, 1966, although lacking cingular processes, are clearly not sexiform. As an additional complication, the holotype of Oligosphaeridium prolixispinosum possesses cingular processes. In this brief contribution, we describe the new genus Fetchamium to accommodate the new transfer Fetchamium prolixispinosum gen. et comb. nov. and provide a discussion and emended diagnosis of the species.

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来源期刊

Journal of Micropalaeontology 生物-古生物学

CiteScore

4.30

自引率

5.00%

发文量

审稿时长

>12 weeks

期刊介绍： The Journal of Micropalaeontology (JM) is an established international journal covering all aspects of microfossils and their application to both applied studies and basic research. In particular we welcome submissions relating to microfossils and their application to palaeoceanography, palaeoclimatology, palaeobiology, evolution, taxonomy, environmental change and molecular phylogeny.